Grayhill Pushbutton switches: Butt Contact 38BH Series - Manual

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Pushbutton Switches
Butt Contact Pushbutton Switches
1 2 3
CL
CL
.320
(8.13)
.200
(5.08)
.020
(0.51)
TYP.
.162
(4.11)
DIM. "A"
.180
(4.57)
DIA.
.100
(2.54)
DIA. .165
(4.19)
.015
(0.38)
TYP.
.200
(5.08)
.030
(0.76)
TYP.
.130
(3.30)
.025
(0.64)
.125
(3.18) .030
(0.76)
TYP. .200
(5.08)
.249
(6.32)
TERMINAL
IDENT-
IFICATION
.200
(5.08) .200
(5.08)
.100
(2.54)
TYP.
.043 (1.09)
DIA. TYP.
Series: 38BT = SPST, Momentary, Thru Hole
Series: 38BH = SPDT, Momentary, Thru Hole
dimension a: 0 = 0.020" 4 = 0.215"
38BX-4-H-3-n
Seal: S = O-Ring Seal, N = No Seal
Contact Material: 1 = Solder Dip over Gold
2 = Solder Dip over Silver
3 = Gold - RoHS Compliant
4 = Silver - RoHS Compliant
Orientation: H = Horizontal to PCB
38BH
38Bt
.249
(6,32)
.200
(5,08)
.030
(0,76)
TYP.
.162
(4,11) .215
(5,46)
.025
(0,64)
.030 (0,76) TYP.
.200 (5,08)
.165 (4,19)
.015 (0,38) TYP.
.200
(5,08)
.320 (8,13)
.020
(0,51)
TYP.
.200
(5,08)
.200
(5,08)
.043 (1,09)
DIA. TYP.
.130
(3,30)
.180 (4,57)
DIA.
.100 (2,54)
DIA.
C
L
C
L
.125
(3,18)
.125
(3,18)
Unless otherwise indicated, tolerances are ± .010 (0,25)
PC Mounting
SPeCiFiCatiOnS
rating Criteria
Operating Life: 80,000 make-and-break cycles
at full load
Contact rating (resistive load):
Gold Contacts: 0.4 VA maximum at 20 Vac or
Vdc maximum
Silver Contacts: 1.0 Amp maximum at 120 Vac
or 28 Vdc
Contact resistance: Below 20 milliohms typical
initial at 2-4 Vdc, 100 mA insulation resistance: 1000 megaohms
min.
Voltage Breakdown: 1000 Vrms minimum at
sea level
Operating temperature: -30°C. to +85°C.
Solderability: Per MIL-STD-202F, Method
208D, or EIA RS-186E Method 9 (1 hour steam
aging)
Materials and Finishes
Base and Cover: Thermoplastic (UL 94V-0)
Plunger: Thermoplastic (UL 94V-0), (S versions
include an internal o-ring seal)
terminals: Copper alloy, gold or silver plate (as
specified) over nickel plate
Spring: Plated Music Wire
Contact System: Copper alloy, gold or silver
plate (as specified) over nickel plate
Switch Support: Brass, tin-plated
CirCuitry
SPSt–n.O.
SPSt n.O.
OrderinG inFOrMatiOn
diMenSiOnS in inches (and millimeters)
SerieS 38Bt and 38BH
Sub-Miniature Horizontal PC Mount
FeatureS
• Drop-In Replacement for Industry Standard
• Sealed Plunger Option
• Printed Circuit Board Mount
• SPST and SPDT, Momentary Contact
SPSt
SPdt
PC Mounting
SPdt–n.O.
N.O.
TERM. 3
N.C.
TERM. 1
COMM
TERM. 2